Java Code Examples for org.eclipse.rdf4j.query.algebra.StatementPattern#getPredicateVar()
The following examples show how to use
org.eclipse.rdf4j.query.algebra.StatementPattern#getPredicateVar() .
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Example 1
| Source File: SourceSelectorWithQueryTransform.java From semagrow with Apache License 2.0 | 6 votes |
|
private Collection<FuzzyEntry<StatementPattern>> transformPattern(StatementPattern pattern)
{
Set<FuzzyEntry<StatementPattern>> transformedPatterns = new HashSet<FuzzyEntry<StatementPattern>>();
//queryTransformation.retrieveEquivalentURIs(pattern)
Var sVar = pattern.getSubjectVar();
Var pVar = pattern.getPredicateVar();
Var oVar = pattern.getObjectVar();
double patternProximity = 1.0;
for (FuzzyEntry<Var> sVar1 : transformVar(sVar)) {
for (FuzzyEntry<Var> pVar1 : transformVar(pVar)) {
for (FuzzyEntry<Var> oVar1 : transformVar(oVar)) {
StatementPattern p = new StatementPattern(sVar1.getElem(), pVar1.getElem(), oVar1.getElem());
if (!p.equals(pattern)) {
double prox = Math.min(Math.min(sVar1.getProximity(), pVar1.getProximity()), oVar1.getProximity());
transformedPatterns.add(new FuzzyEntry<StatementPattern>(p, prox));
}
}
}
}
return transformedPatterns;
}
Example 2
| Source File: FilterRangeVisitor.java From rya with Apache License 2.0 | 6 votes |
|
@Override
public void meet(final StatementPattern node) throws Exception {
super.meet(node);
final Var subjectVar = node.getSubjectVar();
final RangeValue subjRange = rangeValues.get(subjectVar);
final Var predVar = node.getPredicateVar();
final RangeValue predRange = rangeValues.get(predVar);
final Var objVar = node.getObjectVar();
final RangeValue objRange = rangeValues.get(objVar);
if(subjRange != null) {
subjectVar.setValue(new RangeIRI(subjRange));//Assumes no blank nodes can be ranges
}
if(predRange != null) {
predVar.setValue(new RangeIRI(predRange));
}
if(objRange != null) {
objVar.setValue(objRange);
}
}
Example 3
| Source File: ReflexivePropertyVisitor.java From rya with Apache License 2.0 | 6 votes |
|
/**
* Check whether any solution for the {@link StatementPattern} could be derived from
* reflexive property inference, and if so, replace the pattern with a union of itself and the
* reflexive solution.
*/
@Override
protected void meetSP(StatementPattern node) throws Exception {
// Only applies when the predicate is defined and reflexive
final Var predVar = node.getPredicateVar();
if (predVar.getValue() != null && inferenceEngine.isReflexiveProperty((IRI) predVar.getValue())) {
final StatementPattern originalSP = node.clone();
// The reflexive solution is a ZeroLengthPath between subject and
// object: they can be matched to one another, whether constants or
// variables.
final Var subjVar = node.getSubjectVar();
final Var objVar = node.getObjectVar();
final ZeroLengthPath reflexiveSolution = new ZeroLengthPath(subjVar, objVar);
node.replaceWith(new InferUnion(originalSP, reflexiveSolution));
}
}
Example 4
| Source File: TransitivePropertyVisitor.java From rya with Apache License 2.0 | 6 votes |
|
@Override
protected void meetSP(final StatementPattern node) throws Exception {
final StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
final IRI pred = (IRI) predVar.getValue();
final String predNamespace = pred.getNamespace();
final Var objVar = sp.getObjectVar();
final Var cntxtVar = sp.getContextVar();
if (objVar != null &&
!RDF.NAMESPACE.equals(predNamespace) &&
!SESAME.NAMESPACE.equals(predNamespace) &&
!RDFS.NAMESPACE.equals(predNamespace)
&& !EXPANDED.equals(cntxtVar)) {
final IRI transPropIri = (IRI) predVar.getValue();
if (inferenceEngine.isTransitiveProperty(transPropIri)) {
node.replaceWith(new TransitivePropertySP(sp.getSubjectVar(), sp.getPredicateVar(), sp.getObjectVar(), sp.getContextVar()));
}
}
}
Example 5
| Source File: AbstractInferVisitor.java From rya with Apache License 2.0 | 6 votes |
|
@Override
public void meet(StatementPattern sp) throws Exception {
if (!include) {
return;
}
if (sp instanceof FixedStatementPattern || sp instanceof TransitivePropertySP || sp instanceof DoNotExpandSP) {
return; //already inferred somewhere else
}
final Var predVar = sp.getPredicateVar();
//we do not let timeRange preds be inferred, not good
if (predVar == null || predVar.getValue() == null
// || RdfCloudTripleStoreUtils.getTtlValueConverter(conf, (URI) predVar.getValue()) != null
) {
return;
}
meetSP(sp);
}
Example 6
| Source File: FluoStringConverter.java From rya with Apache License 2.0 | 5 votes |
|
/**
* Provides a string representation of an SP which contains info about
* whether each component (subj, pred, obj) is constant and its data and
* data type if it is constant.
*
* @param sp - The statement pattern to convert. (not null)
* @return A String representation of the statement pattern that may be
* used to do triple matching.
*/
public static String toStatementPatternString(final StatementPattern sp) {
checkNotNull(sp);
final Var subjVar = sp.getSubjectVar();
String subj = subjVar.getName();
if(subjVar.getValue() != null) {
final Value subjValue = subjVar.getValue();
subj = VarNameUtils.createSimpleConstVarName(subjVar);
if (subjValue instanceof BNode ) {
subj = subj + TYPE_DELIM + RyaSchema.BNODE_NAMESPACE + TYPE_DELIM + ((BNode) subjValue).getID();
} else {
subj = subj + TYPE_DELIM + URI_TYPE;
}
}
final Var predVar = sp.getPredicateVar();
String pred = predVar.getName();
if(predVar.getValue() != null) {
pred = VarNameUtils.createSimpleConstVarName(predVar);
pred = pred + TYPE_DELIM + URI_TYPE;
}
final Var objVar = sp.getObjectVar();
String obj = objVar.getName();
if (objVar.getValue() != null) {
final Value objValue = objVar.getValue();
obj = VarNameUtils.createSimpleConstVarName(objVar);
final RyaType rt = RdfToRyaConversions.convertValue(objValue);
obj = obj + TYPE_DELIM + rt.getDataType().stringValue();
}
return subj + DELIM + pred + DELIM + obj;
}
Example 7
| Source File: SymmetricPropertyVisitor.java From rya with Apache License 2.0 | 5 votes |
|
@Override
protected void meetSP(StatementPattern node) throws Exception {
StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
IRI pred = (IRI) predVar.getValue();
String predNamespace = pred.getNamespace();
final Var objVar = sp.getObjectVar();
final Var cntxtVar = sp.getContextVar();
if (objVar != null &&
!RDF.NAMESPACE.equals(predNamespace) &&
!SESAME.NAMESPACE.equals(predNamespace) &&
!RDFS.NAMESPACE.equals(predNamespace)
&& !EXPANDED.equals(cntxtVar)) {
/**
*
* { ?a ?pred ?b .}\n" +
" UNION " +
" { ?b ?pred ?a }
*/
IRI symmPropIri = (IRI) predVar.getValue();
if(inferenceEngine.isSymmetricProperty(symmPropIri)) {
Var subjVar = sp.getSubjectVar();
Union union = new InferUnion();
union.setLeftArg(sp);
union.setRightArg(new StatementPattern(objVar, predVar, subjVar, cntxtVar));
node.replaceWith(union);
}
}
}
Example 8
| Source File: AllValuesFromVisitor.java From rya with Apache License 2.0 | 5 votes |
|
/**
* Checks whether the StatementPattern is a type query whose solutions could be inferred
* by allValuesFrom inference, and if so, replaces the node with a union of itself and any
* possible inference.
*/
@Override
protected void meetSP(StatementPattern node) throws Exception {
final Var subjVar = node.getSubjectVar();
final Var predVar = node.getPredicateVar();
final Var objVar = node.getObjectVar();
// Only applies to type queries where the type is defined
if (predVar != null && RDF.TYPE.equals(predVar.getValue()) && objVar != null && objVar.getValue() instanceof Resource) {
final Resource typeToInfer = (Resource) objVar.getValue();
Map<Resource, Set<IRI>> relevantAvfRestrictions = inferenceEngine.getAllValuesFromByValueType(typeToInfer);
if (!relevantAvfRestrictions.isEmpty()) {
// We can infer the queried type if, for an allValuesFrom restriction type
// associated with the queried type, some anonymous neighboring node belongs to the
// restriction type and has the node in question (subjVar) as a value for the
// restriction's property.
final Var avfTypeVar = new Var("t-" + UUID.randomUUID());
final Var avfPredVar = new Var("p-" + UUID.randomUUID());
final Var neighborVar = new Var("n-" + UUID.randomUUID());
neighborVar.setAnonymous(true);
final StatementPattern membershipPattern = new DoNotExpandSP(neighborVar,
new Var(RDF.TYPE.stringValue(), RDF.TYPE), avfTypeVar);
final StatementPattern valuePattern = new StatementPattern(neighborVar, avfPredVar, subjVar);
final InferJoin avfPattern = new InferJoin(membershipPattern, valuePattern);
// Use a FixedStatementPattern to contain the appropriate (restriction, predicate)
// pairs, and check each one against the general pattern.
final FixedStatementPattern avfPropertyTypes = new FixedStatementPattern(avfTypeVar,
new Var(OWL.ONPROPERTY.stringValue(), OWL.ONPROPERTY), avfPredVar);
for (Resource avfRestrictionType : relevantAvfRestrictions.keySet()) {
for (IRI avfProperty : relevantAvfRestrictions.get(avfRestrictionType)) {
avfPropertyTypes.statements.add(new NullableStatementImpl(avfRestrictionType,
OWL.ONPROPERTY, avfProperty));
}
}
final InferJoin avfInferenceQuery = new InferJoin(avfPropertyTypes, avfPattern);
node.replaceWith(new InferUnion(node.clone(), avfInferenceQuery));
}
}
}
Example 9
| Source File: SomeValuesFromVisitor.java From rya with Apache License 2.0 | 5 votes |
|
/**
* Checks whether the StatementPattern is a type query whose solutions could be inferred by
* someValuesFrom inference, and if so, replaces the node with a union of itself and any
* possible inference.
*/
@Override
protected void meetSP(StatementPattern node) throws Exception {
final Var subjVar = node.getSubjectVar();
final Var predVar = node.getPredicateVar();
final Var objVar = node.getObjectVar();
// Only applies to type queries where the type is defined
if (predVar != null && RDF.TYPE.equals(predVar.getValue()) && objVar != null && objVar.getValue() instanceof Resource) {
final Resource typeToInfer = (Resource) objVar.getValue();
Map<Resource, Set<IRI>> relevantSvfRestrictions = inferenceEngine.getSomeValuesFromByRestrictionType(typeToInfer);
if (!relevantSvfRestrictions.isEmpty()) {
// We can infer the queried type if it is to a someValuesFrom restriction (or a
// supertype of one), and the node in question (subjVar) is the subject of a triple
// whose predicate is the restriction's property and whose object is an arbitrary
// node of the restriction's value type.
final Var valueTypeVar = new Var("t-" + UUID.randomUUID());
final Var svfPredVar = new Var("p-" + UUID.randomUUID());
final Var neighborVar = new Var("n-" + UUID.randomUUID());
neighborVar.setAnonymous(true);
final StatementPattern membershipPattern = new DoNotExpandSP(neighborVar,
new Var(RDF.TYPE.stringValue(), RDF.TYPE), valueTypeVar);
final StatementPattern valuePattern = new StatementPattern(subjVar, svfPredVar, neighborVar);
final InferJoin svfPattern = new InferJoin(membershipPattern, valuePattern);
// Use a FixedStatementPattern to contain the appropriate (predicate, value type)
// pairs, and check each one against the general pattern.
final FixedStatementPattern svfPropertyTypes = new FixedStatementPattern(svfPredVar,
new Var(OWL.SOMEVALUESFROM.stringValue(), OWL.SOMEVALUESFROM), valueTypeVar);
for (Resource svfValueType : relevantSvfRestrictions.keySet()) {
for (IRI svfProperty : relevantSvfRestrictions.get(svfValueType)) {
svfPropertyTypes.statements.add(new NullableStatementImpl(svfProperty,
OWL.SOMEVALUESFROM, svfValueType));
}
}
final InferJoin svfInferenceQuery = new InferJoin(svfPropertyTypes, svfPattern);
node.replaceWith(new InferUnion(node.clone(), svfInferenceQuery));
}
}
}
Example 10
| Source File: InverseOfVisitor.java From rya with Apache License 2.0 | 5 votes |
|
@Override
protected void meetSP(StatementPattern node) throws Exception {
StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
IRI pred = (IRI) predVar.getValue();
String predNamespace = pred.getNamespace();
final Var objVar = sp.getObjectVar();
final Var cntxtVar = sp.getContextVar();
if (objVar != null &&
!RDF.NAMESPACE.equals(predNamespace) &&
!SESAME.NAMESPACE.equals(predNamespace) &&
!RDFS.NAMESPACE.equals(predNamespace)
&& !EXPANDED.equals(cntxtVar)) {
/**
*
* { ?a ?pred ?b .}\n" +
" UNION " +
" { ?b ?pred ?a }
*/
IRI predIri = (IRI) predVar.getValue();
IRI invPropIri = inferenceEngine.findInverseOf(predIri);
if (invPropIri != null) {
Var subjVar = sp.getSubjectVar();
Union union = new InferUnion();
union.setLeftArg(sp);
union.setRightArg(new StatementPattern(objVar, new Var(predVar.getName(), invPropIri), subjVar, cntxtVar));
node.replaceWith(union);
}
}
}
Example 11
| Source File: StatementMetadataExternalSetProvider.java From rya with Apache License 2.0 | 5 votes |
|
private Set<StatementPattern> removeInvalidProperties(Collection<StatementPattern> patterns) {
Set<StatementPattern> finalPatterns = new HashSet<>();
for (StatementPattern pattern : patterns) {
Var var = pattern.getPredicateVar();
if (var.getValue() != null && var.getValue() instanceof IRI) {
RyaIRI uri = RdfToRyaConversions.convertIRI((IRI) var.getValue());
if(expectedURI.contains(uri) || metadataProperties.contains(uri)) {
finalPatterns.add(pattern);
}
}
}
return finalPatterns;
}
Example 12
| Source File: ConstructProjection.java From rya with Apache License 2.0 | 4 votes |
|
public ConstructProjection(StatementPattern pattern) {
this(pattern.getSubjectVar(), pattern.getPredicateVar(), pattern.getObjectVar());
}
Example 13
| Source File: SubPropertyOfVisitor.java From rya with Apache License 2.0 | 4 votes |
|
@Override
protected void meetSP(final StatementPattern node) throws Exception {
final StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
final IRI pred = (IRI) predVar.getValue();
final String predNamespace = pred.getNamespace();
final Var objVar = sp.getObjectVar();
final Var cntxtVar = sp.getContextVar();
if (objVar != null &&
!RDF.NAMESPACE.equals(predNamespace) &&
!SESAME.NAMESPACE.equals(predNamespace) &&
!RDFS.NAMESPACE.equals(predNamespace)
&& !EXPANDED.equals(cntxtVar)) {
/**
*
* { ?subProp rdfs:subPropertyOf ub:worksFor . ?y ?subProp <http://www.Department0.University0.edu> }\n" +
" UNION " +
" { ?y ub:worksFor <http://www.Department0.University0.edu> }
*/
// String s = UUID.randomUUID().toString();
// Var subPropVar = new Var(s);
// StatementPattern subPropOf = new StatementPattern(subPropVar, new Var("c-" + s, SESAME.DIRECTSUBPROPERTYOF), predVar, EXPANDED);
// StatementPattern subPropOf2 = new StatementPattern(sp.getSubjectVar(), subPropVar, objVar, EXPANDED);
// InferJoin join = new InferJoin(subPropOf, subPropOf2);
// join.getProperties().put(InferConstants.INFERRED, InferConstants.TRUE);
// node.replaceWith(join);
// Collection<URI> parents = inferenceEngine.findParents(inferenceEngine.subPropertyOfGraph, (URI) predVar.getValue());
// if (parents != null && parents.size() > 0) {
// StatementPatterns statementPatterns = new StatementPatterns();
// statementPatterns.patterns.add(node);
// Var subjVar = node.getSubjectVar();
// for (IRI iri : parents) {
// statementPatterns.patterns.add(new StatementPattern(subjVar, new Var(predVar.getName(), iri), objVar));
// }
// node.replaceWith(statementPatterns);
// }
// if (parents != null && parents.size() > 0) {
// VarCollection vc = new VarCollection();
// vc.setName(predVar.getName());
// vc.values.add(predVar);
// for (IRI iri : parents) {
// vc.values.add(new Var(predVar.getName(), iri));
// }
// Var subjVar = node.getSubjectVar();
// node.replaceWith(new StatementPattern(subjVar, vc, objVar, node.getContextVar()));
// }
final IRI subprop_iri = (IRI) predVar.getValue();
final Set<IRI> parents = InferenceEngine.findParents(inferenceEngine.getSubPropertyOfGraph(), subprop_iri);
if (parents != null && parents.size() > 0) {
final String s = UUID.randomUUID().toString();
final Var typeVar = new Var(s);
final FixedStatementPattern fsp = new FixedStatementPattern(typeVar, new Var("c-" + s, RDFS.SUBPROPERTYOF), predVar, cntxtVar);
// fsp.statements.add(new NullableStatementImpl(subprop_uri, RDFS.SUBPROPERTYOF, subprop_uri));
//add self
parents.add(subprop_iri);
for (final IRI u : parents) {
fsp.statements.add(new NullableStatementImpl(u, RDFS.SUBPROPERTYOF, subprop_iri));
}
final StatementPattern rdfType = new DoNotExpandSP(sp.getSubjectVar(), typeVar, sp.getObjectVar(), cntxtVar);
final InferJoin join = new InferJoin(fsp, rdfType);
join.getProperties().put(InferConstants.INFERRED, InferConstants.TRUE);
node.replaceWith(join);
}
}
}
Example 14
| Source File: PrepareOwnedTupleExpr.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 4 votes |
|
@Override
public void meet(StatementPattern node) throws RepositoryException {
StringBuilder builder = new StringBuilder();
Scope scope = node.getScope();
Var subj = node.getSubjectVar();
Var pred = node.getPredicateVar();
Var obj = node.getObjectVar();
Var ctx = node.getContextVar();
boolean cokay = ctx == null && scope.equals(Scope.DEFAULT_CONTEXTS)
|| ctx != null && scope.equals(Scope.NAMED_CONTEXTS);
boolean sokay = !subj.hasValue() || subj.isAnonymous() || subj.getValue() instanceof IRI;
boolean ookay = !obj.hasValue() || obj.isAnonymous() || obj.getValue() instanceof IRI
|| obj.getValue() instanceof Literal;
if (cokay && sokay && ookay) {
variables.clear();
if (ctx != null) {
builder.append("GRAPH ");
appendVar(builder, ctx.getName());
builder.append(" {\n");
}
appendVar(builder, subj);
appendVar(builder, pred);
appendVar(builder, obj);
builder.append(" .");
appendFilter(builder, subj);
appendFilter(builder, pred);
appendFilter(builder, obj);
if (ctx != null) {
if (ctx.hasValue()) {
builder.append("\nFILTER sameTerm(");
appendVar(builder, ctx.getName());
builder.append(", ");
writeValue(builder, ctx.getValue());
builder.append(")\n");
}
builder.append("}");
}
this.pattern = builder.toString();
this.patternNode = node;
} else {
this.patternNode = null; // NOPMD
}
}
Example 15
| Source File: TrueStatementPattern.java From rdf4j with BSD 3-Clause "New" or "Revised" License | 4 votes |
|
public TrueStatementPattern(StatementPattern node) {
super(node.getSubjectVar(), node.getPredicateVar(), node.getObjectVar(), node.getContextVar());
}
Example 16
| Source File: EntityQueryNode.java From rya with Apache License 2.0 | 4 votes |
|
/**
* Constructs an instance of {@link EntityQueryNode}.
*
* @param type - The type of {@link Entity} this node matches. (not null)
* @param patterns - The query StatementPatterns that are solved using an
* Entity of the Type. (not null)
* @param entities - The {@link EntityStorage} that will be searched to match
* {@link BindingSet}s when evaluating a query. (not null)
*/
public EntityQueryNode(final Type type, final Collection<StatementPattern> patterns, final EntityStorage entities) throws IllegalStateException {
this.type = requireNonNull(type);
this.patterns = requireNonNull(patterns);
this.entities = requireNonNull(entities);
bindingNames = new HashSet<>();
properties = new HashSet<>();
// Subject based preconditions.
verifySameSubjects(patterns);
// Predicate based preconditions.
verifyAllPredicatesAreConstants(patterns);
verifyHasCorrectTypePattern(type, patterns);
verifyAllPredicatesPartOfType(type, patterns);
// The Subject may either be constant or a variable.
final Var subject = patterns.iterator().next().getSubjectVar();
subjectIsConstant = subject.isConstant();
if(subjectIsConstant) {
subjectConstant = Optional.of( subject.getValue().toString() );
subjectVar = Optional.empty();
} else {
subjectConstant = Optional.empty();
subjectVar = Optional.of( subject.getName() );
}
// Any constant that appears in the Object portion of the SP will be used to make sure they match.
final Builder<RyaIRI, Var> builder = ImmutableMap.builder();
for(final StatementPattern sp : patterns) {
final Var object = sp.getObjectVar();
final Var pred = sp.getPredicateVar();
final RyaIRI predIRI = new RyaIRI(pred.getValue().stringValue());
bindingNames.addAll(sp.getBindingNames());
if(object.isConstant() && !pred.getValue().equals(RDF.TYPE)) {
final RyaType propertyType = RdfToRyaConversions.convertValue(object.getValue());
properties.add(new Property(predIRI, propertyType));
}
builder.put(predIRI, object);
}
objectVariables = builder.build();
}
Example 17
| Source File: EntityIndexSetProvider.java From rya with Apache License 2.0 | 4 votes |
|
private RyaIRI getPredIRI(final StatementPattern pattern) {
final Var pred = pattern.getPredicateVar();
return new RyaIRI(pred.getValue().stringValue());
}
Example 18
| Source File: SubClassOfVisitor.java From rya with Apache License 2.0 | 4 votes |
|
@Override
protected void meetSP(final StatementPattern node) throws Exception {
final StatementPattern sp = node.clone();
final Var predVar = sp.getPredicateVar();
final Var objVar = sp.getObjectVar();
final Var conVar = sp.getContextVar();
if (predVar != null && objVar != null && objVar.getValue() != null && RDF.TYPE.equals(predVar.getValue())
&& !EXPANDED.equals(conVar)) {
/**
* ?type sesame:directSubClassOf ub:Student . ?student rdf:type ?type +
*/
// String s = UUID.randomUUID().toString();
// Var typeVar = new Var(s);
// StatementPattern subClassOf = new StatementPattern(typeVar, new Var("c-" + s, SESAME.DIRECTSUBCLASSOF), objVar, SUBCLASS_EXPANDED);
// StatementPattern rdfType = new StatementPattern(sp.getSubjectVar(), sp.getPredicateVar(), typeVar, SUBCLASS_EXPANDED);
// InferJoin join = new InferJoin(subClassOf, rdfType);
// join.getProperties().put(InferConstants.INFERRED, InferConstants.TRUE);
// node.replaceWith(join);
final IRI subclassof_iri = (IRI) objVar.getValue();
final Collection<IRI> parents = InferenceEngine.findParents(inferenceEngine.getSubClassOfGraph(), subclassof_iri);
if (parents != null && parents.size() > 0) {
final String s = UUID.randomUUID().toString();
final Var typeVar = new Var(s);
final FixedStatementPattern fsp = new FixedStatementPattern(typeVar, new Var("c-" + s, RDFS.SUBCLASSOF), objVar, conVar);
parents.add(subclassof_iri);
for (final IRI iri : parents) {
fsp.statements.add(new NullableStatementImpl(iri, RDFS.SUBCLASSOF, subclassof_iri));
}
final StatementPattern rdfType = new DoNotExpandSP(sp.getSubjectVar(), sp.getPredicateVar(), typeVar, conVar);
final InferJoin join = new InferJoin(fsp, rdfType);
join.getProperties().put(InferConstants.INFERRED, InferConstants.TRUE);
node.replaceWith(join);
}
// if (parents != null && parents.size() > 0) {
// StatementPatterns statementPatterns = new StatementPatterns();
// statementPatterns.patterns.add(node);
// Var subjVar = node.getSubjectVar();
// for (IRI iri : parents) {
// statementPatterns.patterns.add(new StatementPattern(subjVar, predVar, new Var(objVar.getName(), iri)));
// }
// node.replaceWith(statementPatterns);
// }
// if (parents != null && parents.size() > 0) {
// VarCollection vc = new VarCollection();
// vc.setName(objVar.getName());
// vc.values.add(objVar);
// for (IRI iri : parents) {
// vc.values.add(new Var(objVar.getName(), iri));
// }
// Var subjVar = node.getSubjectVar();
// node.replaceWith(new StatementPattern(subjVar, predVar, vc, node.getContextVar()));
// }
}
}
Example 19
| Source File: StarQuery.java From rya with Apache License 2.0 | 4 votes |
|
public static boolean isValidStarQuery(final Collection<StatementPattern> nodes) {
Set<String> bindings = null;
boolean contextSet = false;
Var context = null;
if(nodes.size() < 2) {
return false;
}
for(final StatementPattern sp: nodes) {
final Var tempContext = sp.getContextVar();
final Var predVar = sp.getPredicateVar();
//does not support variable context
if(tempContext != null && !tempContext.isConstant()) {
return false;
}
if(!contextSet) {
context = tempContext;
contextSet = true;
} else {
if(context == null && tempContext != null) {
return false;
} else if (context != null && !context.equals(tempContext)) {
return false;
}
}
if(!predVar.isConstant()) {
return false;
}
if(bindings == null ) {
bindings = sp.getBindingNames();
if(bindings.size() == 0) {
return false;
}
} else {
bindings = Sets.intersection(bindings, sp.getBindingNames());
if(bindings.size() == 0) {
return false;
}
}
}
return isBindingsetValid(bindings);
}
Example 20
| Source File: EmptyStatementPattern.java From CostFed with GNU Affero General Public License v3.0 | 4 votes |
|
public EmptyStatementPattern(StatementPattern node) {
super(node.getSubjectVar(), node.getPredicateVar(), node.getObjectVar(), node.getContextVar());
}
